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69731069 = 972113407
BaseRepresentation
bin1000010100000…
…00001011111101
311212012201001012
410022000023331
5120322343234
610530325005
71504463402
oct412001375
9155181035
1069731069
11363a7a91
121b429765
13115a62b5
1493922a9
1561c60ce
hex42802fd

69731069 has 8 divisors (see below), whose sum is σ = 70804608. Its totient is φ = 68664960.

The previous prime is 69731021. The next prime is 69731089. The reversal of 69731069 is 96013796.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 69731069 - 28 = 69730813 is a prime.

It is a super-2 number, since 2×697310692 = 9724843967765522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69731089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18764 + ... + 22170.

It is an arithmetic number, because the mean of its divisors is an integer number (8850576).

Almost surely, 269731069 is an apocalyptic number.

It is an amenable number.

69731069 is a deficient number, since it is larger than the sum of its proper divisors (1073539).

69731069 is a wasteful number, since it uses less digits than its factorization.

69731069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3715.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 69731069 is about 8350.5130980078. The cubic root of 69731069 is about 411.6000710368.

The spelling of 69731069 in words is "sixty-nine million, seven hundred thirty-one thousand, sixty-nine".

Divisors: 1 97 211 3407 20467 330479 718877 69731069